JPS6333504A - Production of columnar laminate - Google Patents
Production of columnar laminateInfo
- Publication number
- JPS6333504A JPS6333504A JP17643686A JP17643686A JPS6333504A JP S6333504 A JPS6333504 A JP S6333504A JP 17643686 A JP17643686 A JP 17643686A JP 17643686 A JP17643686 A JP 17643686A JP S6333504 A JPS6333504 A JP S6333504A
- Authority
- JP
- Japan
- Prior art keywords
- layer material
- powder
- outer layer
- space
- intermediate layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 145
- 239000000843 powder Substances 0.000 claims abstract description 59
- 238000009924 canning Methods 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 238000011068 loading method Methods 0.000 claims description 5
- 230000004927 fusion Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 4
- 230000002542 deteriorative effect Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000002706 hydrostatic effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000011812 mixed powder Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000007751 thermal spraying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 101150062705 Wipf3 gene Proteins 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、積層構造を有する円柱状部材の製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a cylindrical member having a laminated structure.
部材の用途・使用条件により、２種の材料、例えば耐摩
耗性にすぐれた材料と強度の高い材料とを外層材および
内層材として両者を積層一体化した部材を形成すること
、あるいは材料コストの節減を図りながら、所要の特性
、例えば耐摩耗性をもたせることを目的として、安価な
材料を内層材とし、これに耐摩耗材料を外層材として積
層した部材を形成することは知られている。Depending on the purpose and conditions of use of the component, it is possible to form a component by laminating two types of materials, for example, a material with excellent wear resistance and a material with high strength, as an outer layer material and an inner layer material, or to reduce material costs. It is known to form a member in which an inexpensive material is used as an inner layer material and a wear-resistant material is laminated on this material as an outer layer material, in order to achieve desired characteristics such as wear resistance while saving money.
これらの積層体の内層と外層とが熱膨張係数の差の大き
い材料の組合わせである場合、使用条件により、層間の
剥離、割れが生じる。この対策として、外層と内層との
間に、両者の中間の熱膨張係数を有する材料を用いて中
間層を形成することも知られている。When the inner layer and outer layer of these laminates are a combination of materials with a large difference in coefficient of thermal expansion, delamination and cracking between the layers may occur depending on the usage conditions. As a countermeasure against this problem, it is also known to form an intermediate layer between the outer layer and the inner layer using a material having a coefficient of thermal expansion between the two.
中間層の形成には、目的とする部材（積層体）の形状に
応じた適宜の方法が用いられる。平板状の積層体を目的
とする場合には、平板状の外層材と内層材との間に、平
板状の中間層材をはさみ、これらを加圧一体化すること
により目的を達するが、円柱状積層体の場合には、その
ような方法をとることは容易でなく、通常は溶射法が用
いられる。For forming the intermediate layer, an appropriate method is used depending on the shape of the intended member (laminate). When the purpose is to create a flat laminate, the purpose is achieved by sandwiching a flat intermediate layer material between the flat outer layer material and the inner layer material and integrating them under pressure. In the case of columnar laminates, it is not easy to use such a method, and thermal spraying is usually used.
積層体の製造における中間層の形成方法としての溶射法
は、円柱体などの曲面に対して比較的容易に所望の層厚
を有する中間層（溶射層）を形成できるという利点があ
るが、その反面、溶射粒子（中間層材の溶滴）が溶射ガ
ンから対象物に飛行する途中で大気酸化をうけるために
、中間層材の酸素濃度が高く、その材質が劣化するとい
う欠点がある。また、中間層を付着させようとする対象
物が粉末成形体（グリーン）である場合には、溶射粒子
（溶滴）の伝熱により成形体表面温度が、上昇し熱衝撃
により成形体（強度が低い）に割れが発生する。このた
めに、溶射による中間層の形成は事実上不可能である。Thermal spraying as a method for forming an intermediate layer in the production of laminates has the advantage of being able to relatively easily form an intermediate layer (sprayed layer) with a desired layer thickness on a curved surface such as a cylindrical body. On the other hand, since the thermal spray particles (droplets of the intermediate layer material) are subjected to atmospheric oxidation while flying from the thermal spray gun to the target object, the intermediate layer material has a high oxygen concentration and has the disadvantage of deteriorating its quality. In addition, when the object to which the intermediate layer is to be attached is a powder compact (green), the surface temperature of the compact increases due to heat transfer of the sprayed particles (droplets), and thermal shock causes the compact (strength (low) cracks occur. For this reason, it is virtually impossible to form an intermediate layer by thermal spraying.
本発明は、上記に鑑みてなされたものであり、外層と内
層との間に両者の中間の熱膨張係数を有する中間層が設
けられた円柱状積層体の改良された製造方法を提供する
。The present invention has been made in view of the above, and provides an improved method for manufacturing a cylindrical laminate in which an intermediate layer having an intermediate coefficient of thermal expansion is provided between an outer layer and an inner layer.
〔問題点を解決するだめの手段および作用〕本発明の円
柱状積層体の製造方法は、
内層材としての金属円柱体を立設し、該金属円柱体にキ
ャニング材としての金属管を外嵌することにより、該金
属円柱体（内層材）のまわりに、所定の層厚の外層と中
間層とを形成するための空間を画成し、該空間内に、外
層材または外層材と内層材との中間の熱膨張係数を有す
る中間層材のいずれか一方を粉末成形体として嵌装し、
残余の空間部分に、他方の層材として粉末を装填したの
ち、脱気しつつ封止し、ついで熱間静水圧加圧焼結に付
して、外層材および中間層材を焼結せしめると共に、各
層材の互いの接触面を融着結合せしめることを特徴とし
ている。[Means and effects for solving the problem] The method for producing a cylindrical laminate of the present invention includes: standing up a metal cylinder as an inner layer material, and fitting a metal tube as a canning material to the outside of the metal cylinder. By doing so, a space for forming an outer layer and an intermediate layer of a predetermined thickness is defined around the metal cylinder (inner layer material), and the outer layer material or the outer layer material and the inner layer material are placed in the space. Either one of the intermediate layer materials having a coefficient of thermal expansion intermediate between the two is inserted as a powder compact,
After filling the remaining space with powder as the other layer material, it is sealed while being degassed, and then subjected to hot isostatic pressure sintering to sinter the outer layer material and the middle layer material. , is characterized in that the contact surfaces of each layer are fused and bonded to each other.
本発明方法を第１図を参照して説明すると、（１）は内
層材である金属円柱体、（１０）はキャニング材として
該金属円柱体（１）に外嵌された金属管、（１））は底
板、（３）は外層材、（２）は中間層材である。この例
における外層材（３）は粉末成形体くグリーン）であり
、中間層材（２）は粉末である。また、内層材（１）で
ある金属円柱体は、中空孔を有する円柱体の例を示して
いるが、むろん目的とする積層体の用途・使用条件によ
り中実円柱体が用いられる場合もある。The method of the present invention will be explained with reference to FIG. 1. (1) is a metal cylinder as an inner layer material, (10) is a metal tube fitted around the metal cylinder (1) as a canning material, (1 )) is the bottom plate, (3) is the outer layer material, and (2) is the middle layer material. In this example, the outer layer material (3) is a powder compact (green), and the middle layer material (2) is a powder. In addition, the metal cylinder that is the inner layer material (1) is an example of a cylinder with hollow holes, but of course a solid cylinder may be used depending on the intended use and usage conditions of the laminate. .
キャニング材（金属管） （１０）は、内層材（金属円
柱体）（１）のまわりに、外層と中間層とを形成するた
めの空間を画成し、その空間内に外層材（粉末成形体）
（３）が嵌装され、更にその残余の空間部分に中間層材
（粉末）（２）が充填される。The canning material (metal tube) (10) defines a space around the inner layer material (metal cylindrical body) (1) for forming an outer layer and an intermediate layer, and the outer layer material (powder molding) is formed in the space. body)
(3) is fitted, and the remaining space is filled with the intermediate layer material (powder) (2).
第２図は、前記第１図の例とは逆に、外層材（３）とし
て粉末を使用し、中間層材（２）として粉末成形体を用
いた例を示している。この場合は、キャニング材（金属
管） （１０）により画成された内層材（金属円柱体）
（１）のまわりの空間内に、まず中間層材（２）である
粉末成形体が嵌装され、ついでその残余の空間内に外層
材（３）としての粉末が充填される。FIG. 2 shows an example in which powder is used as the outer layer material (3) and a powder compact is used as the intermediate layer material (2), contrary to the example shown in FIG. 1. In this case, the inner layer material (metal cylinder) defined by the canning material (metal tube) (10)
First, a powder compact as an intermediate layer material (2) is fitted into the space around (1), and then powder as an outer layer material (3) is filled into the remaining space.
前記第１図、第２図に示すいずれの場合も、目的とする
積層体の用途・使用条件により、内層材（１）のまわり
の必要な部分にのみ積層構造を形成することができる。In either case shown in FIG. 1 or FIG. 2, the laminated structure can be formed only in the necessary portions around the inner layer material (1) depending on the intended use and usage conditions of the laminated body.
第３図はその例を示しており、内層材（１）として、段
差付き金属円柱体を用い、下部の突起部（１′）にキャ
ニング材（金属管） （１０）を嵌着してその上部の空
間内に外層材（３）と中間層材（２）とを装填すること
により、内層材（１）のまわりの一部（この例では、突
起部（１′）より上方の部分）のみを積層構造としてい
る。この場合、突起部（１′）を内層材（１）とは別体
として準備し、第１図や第２図の例で用いた内層材（１
）に嵌着して段差を付けてもよい。Figure 3 shows an example of this, in which a stepped metal cylindrical body is used as the inner layer material (1), and a canning material (metal tube) (10) is fitted onto the lower protrusion (1'). By loading the outer layer material (3) and the intermediate layer material (2) into the upper space, a part around the inner layer material (1) (in this example, the part above the protrusion (1')) The only part has a laminated structure. In this case, the protrusion (1') is prepared separately from the inner layer material (1), and the inner layer material (1) used in the examples of FIGS.
) may be fitted to create a step.
外層材（３）および中間層材（２）の粉末は、金属粉末
（例えばニッケル基合金粉末、コバルト基合金粉末）、
セラミック粉末（例えば、窒化けい素粉束、炭化タング
ステン粉末）、または金属粉末とセラミック粉末との混
合粉末（例えば、ニッケル基合金粉末またはコバルト基
合金粉末＋炭化タングステン粉末）等である。これらの
粉末の種類・材質は、目的とする積層体の用途・要求特
性および内層材との熱膨張係数の大小関係により適宜選
択される。粉末として、金属粉末とセラミック粉末との
混合粉末を用いる場合には、後記実施例にも示すように
、両者の混合比率を変えることにより、材料特性（例え
ば耐摩耗性等）や熱膨張係数を調整することができる。The powders of the outer layer material (3) and the intermediate layer material (2) include metal powder (for example, nickel-based alloy powder, cobalt-based alloy powder),
These include ceramic powder (for example, silicon nitride powder bundle, tungsten carbide powder), or mixed powder of metal powder and ceramic powder (for example, nickel-based alloy powder or cobalt-based alloy powder + tungsten carbide powder). The type and material of these powders are appropriately selected depending on the intended use and required characteristics of the laminate and the magnitude relationship of the coefficient of thermal expansion with the inner layer material. When using a mixed powder of metal powder and ceramic powder as the powder, material properties (e.g. wear resistance, etc.) and coefficient of thermal expansion can be improved by changing the mixing ratio of the two, as shown in the examples below. Can be adjusted.
なお、上記各粉末の成形体（グリーン）は、例えば冷間
静水圧加圧成形法により形成される。The molded bodies (green) of each of the powders described above are formed, for example, by cold isostatic pressing.
上記のように、内層材（１）とキャニング材（１０）と
の間に外層材（３）および中間層材（２）を装填したの
ち、脱気しく必要に応じ還元処理を行う）、開口端面に
蓋材（１２）をかぶせて封止し、ついでこれを熱間静水
圧加圧焼結に付す。As mentioned above, after loading the outer layer material (3) and the intermediate layer material (2) between the inner layer material (1) and the canning material (10), perform deaeration and reduction treatment as necessary), and open the The end face is covered with a lid material (12) for sealing, and then subjected to hot isostatic pressure sintering.
熱間静水圧加圧焼結処理により、外層材（３）および中
間層材（２）が焼結して焼結体からなる外層と中間層が
形成されると共に、外層、中間層および内層（金属円柱
体）は互いの接触面で融着結合する。こうして、焼結処
理を終えたのち、キャニング材（１０）や蓋材（１２）
等を機械加工により除去することにより、外層と内層お
よびその中間の熱膨張係数を有する中間層とが融着一体
化した円柱状積層体が得られる。By the hot isostatic pressure sintering process, the outer layer material (3) and the intermediate layer material (2) are sintered to form an outer layer and an intermediate layer made of sintered bodies, and the outer layer, the intermediate layer, and the inner layer ( metal cylinders) are fused and bonded at their contact surfaces. After completing the sintering process, the canning material (10) and lid material (12) are
By removing these by machining, a cylindrical laminate in which the outer layer, the inner layer, and the intermediate layer having a coefficient of thermal expansion between them are fused and integrated can be obtained.
本発明は、内層材と外層材との間に、両層の中間の熱膨
張係数を有する中間層材を、粉末または粉末成形体とし
て介装させ、熱間静水圧加圧焼結により焼結させること
としたので、溶射法のような材質劣化の問題はなく、か
つ内層材である金属円柱体との接触面はもちろん、外層
材である粉末または粉末成形体の焼結により形成される
焼結体層との接触面においてもすぐれた融着結合関係が
形成される。In the present invention, an intermediate layer material having a coefficient of thermal expansion between the inner layer material and the outer layer material is interposed as a powder or a powder compact, and the intermediate layer material is sintered by hot isostatic pressure sintering. This method eliminates the problem of material deterioration that occurs with thermal spraying, and the sintered surface formed by sintering the powder or powder compact, which is the outer layer material, as well as the contact surface with the metal cylindrical body that is the inner layer material. An excellent fusion bond is also formed at the contact surface with the compact layer.
また、中間層材と共に、外層材にも粉末または粉末成形
体を使用することとしたので、粉末の種類・材質、特に
異種粉末の混合により、各層間の熱膨張係数の大小関係
の調節を比較的容易に行うことができる。In addition, since we decided to use powder or powder compacts for the outer layer material as well as the intermediate layer material, we compared the adjustment of the magnitude relationship of the thermal expansion coefficient between each layer by changing the type and material of the powder, especially by mixing different types of powder. It can be done easily.
更に、得られる積層体は外層が焼結体であるので、表面
の耐摩耗性にすぐれている。Furthermore, since the outer layer of the resulting laminate is a sintered body, the surface has excellent wear resistance.
実施例１
第３図に示すように段差付き内層材（１）に軟鋼製キャ
ニング材（内径２５０ ｗφ、肉厚２鶴） （１０）を
嵌着し、その空間内に外層材（３）と中間層材（２）を
装填する。但し、外層材として粉末成形体、中間層材と
して粉末を使用した。外層材と中間層材を装填後、脱気
し、軟鋼製蓋材（肉厚２鰭）で封止したのち、熱間静水
圧加圧焼結に付し、その後機械加工を施して製品を得た
。Example 1 As shown in Fig. 3, a mild steel canning material (inner diameter 250 wφ, wall thickness 2 mm) (10) was fitted onto the stepped inner layer material (1), and the outer layer material (3) was inserted into the space. Load the intermediate layer material (2). However, a powder compact was used as the outer layer material, and a powder was used as the intermediate layer material. After loading the outer layer material and the middle layer material, the product is degassed and sealed with a mild steel lid material (2 fins thick), subjected to hot isostatic pressure sintering, and then machined. Obtained.
［１）製造条件
（１） 内層材
（イ）材質：５４５Ｃ炭素鋼
（ロ）サイズ（１）：内径５０φ、全長２００１突起部
肉厚１００Ｌ、長さ５ＯＮ
（２）外層材（粉末成形体）
（イ）材質：Ｃｏ基合金（Ｍｏ２７％、Ｃｒ１６％、８
２％、Ｓｉ２％、Ｂ３１．Ｃｏ）粉末（４４μｍ）とＷ
Ｃ粉末（９μｍ）の混合粉末（ＷＣ３０ｗｔ％）を冷間
静水圧加圧成形し、グリーン状態で機械加工。[1] Manufacturing conditions (1) Inner layer material (a) Material: 545C carbon steel (b) Size (1): Inner diameter 50φ, total length 2001, protrusion wall thickness 100L, length 5ON (2) Outer layer material (powder compact) (a) Material: Co-based alloy (Mo27%, Cr16%, 8
2%, Si2%, B31. Co) powder (44 μm) and W
A mixed powder (WC 30 wt%) of C powder (9 μm) was cold isostatically pressed and machined in the green state.
（ロ）サイズ（璽ｌ）：内径１７０φ、肉厚４０ｔ、長
さ１５０１ 。(B) Size (L): Inner diameter 170φ, wall thickness 40t, length 1501.
（３）中間層材（粉末）
（イ）材質：Ｃｏ基合金粉末（成分組成、粒径は外層材
のものと同じ）にＷＣ粉末（９μｍ）を５ｗｔ％混合し
た混合粉末。(3) Intermediate layer material (powder) (a) Material: Mixed powder in which 5 wt% of WC powder (9 μm) is mixed with Co-based alloy powder (composition and particle size are the same as those of the outer layer material).
（ロ）充填層厚：５ｍｍ
（４）焼結
温度： １０５０℃、加圧カニ １０００ｋｇ ｆ ／
ｃｒＡ、保持時間：２Ｈｒ
機械加工後の製品サイズ（龍）：外径２１０φ、内径７
５φ、長さ１５（１（中間層厚：５龍）。(b) Packed layer thickness: 5 mm (4) Sintering temperature: 1050°C, pressure crab 1000 kg f/
crA, holding time: 2Hr Product size after machining (dragon): Outer diameter 210φ, inner diameter 7
5φ, length 15 (1 (intermediate layer thickness: 5 dragons).
（ｎ）製品性状
（１） 外層および中間層は、ＷＣ粒子を分散相とし
て含む焼結体。外層、中間層および内層の各界面は完全
に融着。外層硬度はＨ＊ｃ ６５゜（２）各層の熱膨
張係数
外層： ８．５ ｘｌＯ−’／’ｃ
中間層： １）．５ｘｌＯ−６／”ｃ
内層： １４．ＯＸ １０−’／ ’Ｃ実施例２
第３図に示すように、段差付き内層材（１）に軟鋼製キ
ャニング材（内径３６０龍φ、肉Ｊ￥２１））（１０）
を嵌着し、その空間内に外層材（３）と中間層材（２）
とを装填する。但し、外層材（３）として粉末、中間層
材（２）として粉末成形体を使用した。外層材と中間層
材を装填後、脱気し、軟鋼製蓋材（肉厚２ｎ＋）で封止
したのち、熱間静水圧加圧焼結に付し、その後機械加工
を施して製品を得た。(n) Product properties (1) The outer layer and the intermediate layer are sintered bodies containing WC particles as a dispersed phase. The interfaces of the outer layer, middle layer, and inner layer are completely fused. The hardness of the outer layer is H*c 65° (2) Thermal expansion coefficient of each layer Outer layer: 8.5 xlO-'/'c Intermediate layer: 1). 5xlO-6/"c Inner layer: 14.OX 10-'/'C Example 2 As shown in Fig. 3, a mild steel canning material (inner diameter 360mm φ, meat J ¥21 )) (10)
The outer layer material (3) and the middle layer material (2) are inserted into the space.
and load it. However, a powder was used as the outer layer material (3), and a powder compact was used as the intermediate layer material (2). After loading the outer layer material and the middle layer material, it was degassed and sealed with a mild steel lid material (thickness 2n+), then subjected to hot isostatic pressure sintering, and then machined to obtain the product. Ta.
（Ｉ）製造条件
（１） 内層材
（イ）材質：５４５Ｃ炭素鋼
（０）サイズ（ｍｍ）：内径１００φ、長す１５（１突
起部肉厚７０’、長さ１００！
（２）中間層材（粉末成形体）
（イ）材質：Ｎｉ基合金（Ｃｒ１３％、８２％、Ｓｉ２
％、Ｃｏ９％、ＢａＣＮ１）粉末（４４μｍ）とＷＣ粉
末（９μｍ）の混合粉末（ＷＣ５ｗｔ％）を冷間静水圧
加圧成形し、グリーン状態で機械加工。(I) Manufacturing conditions (1) Inner layer material (A) Material: 545C carbon steel (0) Size (mm): Inner diameter 100φ, length 15 (1 protrusion wall thickness 70', length 100!) (2) Intermediate layer Material (powder compact) (a) Material: Ni-based alloy (Cr13%, 82%, Si2
%, Co9%, BaCN1) powder (44 μm) and WC powder (9 μm) (WC5wt%) was cold isostatically pressed and machined in the green state.
（ロ）サイズ（−一）：内径２４０φ、肉厚１５１．長
さ１０ＯＡ
（３）外層材（粉末）
くイ）材質；Ｎｉ基合金（成分組成、粒径は中間層材の
ものと同じ）にＷＣ粉末（９μｍ）を２５ｗｔ％混合し
た混合粉末。(B) Size (-1): Inner diameter 240φ, wall thickness 151. Length: 10OA (3) Outer layer material (powder) A) Material: Mixed powder made by mixing 25 wt% of WC powder (9 μm) with Ni-based alloy (composition and particle size are the same as those of the intermediate layer material).
（ロ）充填層厚：４５１重
（４）焼結
温度：９５０°Ｃ１加圧カニ １０５０ｋｇ ｆ ／
ｃｏ！、保持時間： ２ Ｈｒ ｅ
機械加工後の製品サイズ（ｎ）：外径３１０φ、内径１
２０φ、長さ１０（１（中間層厚：１０鶴）。(b) Packed layer thickness: 451 weight (4) Sintering temperature: 950°C1 pressure crab 1050kg f /
co! , Holding time: 2 Hr e Product size after machining (n): Outer diameter 310φ, inner diameter 1
20φ, length 10 (1 (intermediate layer thickness: 10 cranes).
（ＩＩ）製品性状
（１）外層および中間層は、ＷＣ粒子を分散相として含
む焼結体。外層、中間層および内層の各界面は完全に融
着。外層硬度はＨＲＣ６４゜（２）各層の熱膨張係数
外層： ９． ＯＸ １０−ｈ／ ”Ｃ中間層 ： １
２．Ｏｘ １０−６／ °ｃ内層： １４．Ｏｘ １０
− ｂ／ ’ｃ〔発明の効果〕
本発明によれば、外層と内層との間に両者の中間の熱膨
張係数を有する中間層が介在する健全な円柱状積層体が
得られる。その外層材および中間層材として粉末を用い
ているので、粉末の組成により比較的容易に各層間の熱
膨張係数を調整することができる。また、外層材として
金属粉末とセラミック粉末の混合粉末を用いた場合には
、特に硬度が高く耐摩耗性に冨む外層が形成されるので
、圧延ロールやガイドローラ等として有用である。(II) Product properties (1) The outer layer and the intermediate layer are sintered bodies containing WC particles as a dispersed phase. The interfaces of the outer layer, middle layer, and inner layer are completely fused. The outer layer hardness is HRC64° (2) Thermal expansion coefficient of each layer Outer layer: 9. OX 10-h/”C intermediate layer: 1
2. Ox 10-6/°c inner layer: 14. Ox10
-b/'c [Effects of the Invention] According to the present invention, a sound cylindrical laminate in which an intermediate layer having a coefficient of thermal expansion intermediate between the outer layer and the inner layer is interposed between the outer layer and the inner layer can be obtained. Since powder is used as the outer layer material and the intermediate layer material, the coefficient of thermal expansion between each layer can be adjusted relatively easily by adjusting the composition of the powder. Further, when a mixed powder of metal powder and ceramic powder is used as the outer layer material, an outer layer having particularly high hardness and wear resistance is formed, so that it is useful as a rolling roll, a guide roller, etc.
第１図〜第３図は本発明の実施例を示す断面説明図であ
る。
１：内層材（金属円柱体）、２：中間層材、３：外層材
、１０：キャニング材（金属管）、１）：底板、１２
： Ｍ材。1 to 3 are cross-sectional explanatory views showing embodiments of the present invention. 1: Inner layer material (metal cylinder), 2: Intermediate layer material, 3: Outer layer material, 10: Canning material (metal tube), 1): Bottom plate, 12
: M material.
Claims (1)
にキャニング材である金属管を外嵌することにより、該
金属円柱体のまわりに、外層と中心層を形成するための
空間を画成し、該空間内に、外層材、または外層材と内
層材との中間の熱膨張係数を有する中間層材のいずれか
一方を粉末成形体として嵌装し、残余の空間部分に、他
方の層材を粉末のまま装填したのち、脱気しつつ封止し
、ついで熱間静水圧加圧焼結に付して、外層材および中
間層材を焼結せしめると共に、各層材の互いの接触面を
融着接合せしめることを特徴とする円柱状積層体の製造
方法。(1) To form an outer layer and a center layer around the metal cylinder by standing up a metal cylinder that is the inner layer material and fitting a metal tube that is the canning material onto the metal cylinder. A space is defined, and either an outer layer material or an intermediate layer material having a coefficient of thermal expansion intermediate between that of the outer layer material and the inner layer material is fitted as a powder compact into the space, and the remaining space is filled with After loading the other layer material as a powder, it is sealed while being degassed, and then subjected to hot isostatic pressure sintering to sinter the outer layer material and the middle layer material, and to sinter each layer material. A method for producing a cylindrical laminate, characterized by fusion bonding their contact surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17643686A JPS6333504A (en) | 1986-07-25 | 1986-07-25 | Production of columnar laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17643686A JPS6333504A (en) | 1986-07-25 | 1986-07-25 | Production of columnar laminate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333504A true JPS6333504A (en) | 1988-02-13 |
Family
ID=16013671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17643686A Pending JPS6333504A (en) | 1986-07-25 | 1986-07-25 | Production of columnar laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333504A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000025111A (en) * | 1998-07-13 | 2000-01-25 | Sony Corp | Roll for super calender device, manufacture thereof, and super calender device |
| JP2012522893A (en) * | 2009-04-02 | 2012-09-27 | サンドヴィク インテレクチュアル プロパティー アーゲー | Manufacturing method of powder products |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56152908A (en) * | 1980-04-26 | 1981-11-26 | Kobe Steel Ltd | Manufacture of composite roll |
-
1986
- 1986-07-25 JP JP17643686A patent/JPS6333504A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56152908A (en) * | 1980-04-26 | 1981-11-26 | Kobe Steel Ltd | Manufacture of composite roll |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000025111A (en) * | 1998-07-13 | 2000-01-25 | Sony Corp | Roll for super calender device, manufacture thereof, and super calender device |
| JP2012522893A (en) * | 2009-04-02 | 2012-09-27 | サンドヴィク インテレクチュアル プロパティー アーゲー | Manufacturing method of powder products |
| US9205492B2 (en) | 2009-04-02 | 2015-12-08 | Sandvik Intellectual Property Ab | Method for manufacturing a powder based article |
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